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Finding the Fourth Proportional to 404,458.70, 558,149.49 and 223,172.33

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Solution

The fourth proportional to 404,458.70, 558,149.49 and 223,172.33 is: 307,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,458.70 : 558,149.49 = 223,172.33 : x
  2. Step 2: Convert to fraction form
    404,458.70/558,149.49 = 223,172.33/x
  3. Step 3: Cross multiply
    404,458.70x = 558,149.49 × 223,172.33
  4. Step 4: Simplify right side
    404,458.70x = 124,563,519,380.86
  5. Step 5: Solve for x
    x = 124,563,519,380.86/404,458.70
  6. Step 6: Final answer
    x = 307,975.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.